12521607696008 has 8 divisors (see below), whose sum is σ = 23478014430030. Its totient is φ = 6260803848000.

The previous prime is 12521607696007. The next prime is 12521607696023. The reversal of 12521607696008 is 80069670612521.

It can be written as a sum of positive squares in only one way, i.e., 11489510185924 + 1032097510084 = 3389618^2 + 1015922^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12521607696007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 782600480993 + ... + 782600481008.

Almost surely, 2^{12521607696008} is an apocalyptic number.

It is an amenable number.

12521607696008 is a deficient number, since it is larger than the sum of its proper divisors (10956406734022).

12521607696008 is a wasteful number, since it uses less digits than its factorization.

12521607696008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565200962007 (or 1565200962003 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 12521607696008 in words is "twelve trillion, five hundred twenty-one billion, six hundred seven million, six hundred ninety-six thousand, eight".